Employee Benefit Plans Summary of Stock Option Transactions for All Stock Option Plans (Details) (Stock Options [Member], USD $)	12 Months Ended
	Sep. 25, 2011	Sep. 26, 2010	Sep. 27, 2009
Stock Options [Member]
Summary of Stock Option Transactions for All Stock Option Plans [Roll Forward]
Options outstanding - Beginning balance	214,958
Options granted	1,220
Options assumed	4,603
Options cancelled/forfeited/expired	(4,250)
Options exercised	(67,279)
Options outstanding - Ending balance	149,252	214,958
Exercisable at September 25, 2011	101,472
Summary of Stock Option Transactions for All Stock Option Plans [Abstract]
Share-based compensation arrangement by share-based payment award, options, exercises in period, total intrinsic value	$ 1,100,000,000	$ 208,000,000	$ 272,000,000
Outstanding at beginning of period, weighted average exercise price	$ 38.51
Options granted, weighted average exercise price	$ 48.37
Options assumed, weighted average exercise price	$ 29.63
Options cancelled/forfeited/ expired, weighted average exercise price	$ 40.99
Options exercised, weighted average exercise price	$ 36.60
Outstanding at end of period, weighted average exercise price	$ 39.10	$ 38.51
Exercisable, weighted average exercise price	$ 38.39
Options outstanding, average remaining contractual term (years)	5.65
Exercisable, average remaining contractual term (years)	4.89
Options outstanding, aggregate intrinsic value	1,700,000,000
Exercisable, aggregate intrinsic value	1,200,000,000
Employee Service Share-Based Compensation, Aggregate Disclosures [Abstract]
Vesting period	5
Stock option exercisable period after grant date	10
Unrecognized compensation costs on nonvested awards	636,000,000
Nonvested awards, total compensation cost not yet recognized, period for recognition (years)	2
Cash received from exercise of stock options	2,500,000,000	565,000,000	534,000,000
Tax benefit realized from exercise of stock options	$ 421,000,000	$ 80,000,000	$ 106,000,000